M. Heydari-Malayeri - Paris Observatory

The Sun's magnetic field which is probably created by the
→ differential rotation of the Sun together with
the movement of charged particles in the → convective zone.
Understanding how the solar magnetic field comes about is the fundamental problem of
Solar Physics. The solar magnetic field is responsible for all solar magnetic phenomena,
such as → sunspots, → solar flares,
→ coronal mass ejections, and the
→ solar wind. The solar magnetic fields
are observed from the → Zeeman broadening of spectral lines,
→ polarization effects on radio emission, and from the
channeling of charged particles into visible → coronal streamers.
The strength of Sun's average magnetic field is 1 → gauss
(twice the average field on the surface of Earth, around 0.5 gauss),
and can be as strong as 4,000 Gauss in the neighborhood of a large sunspot.